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Microstructure Evolution Through Cryogenic Rolling of Ultra-High Purity Titanium Produced by Electron Beam Melting

Ko Ui Jun, Han Byoung Jun, Park Kyoung-Tae, Ebrahimian Marzieh, Kim Jeoung Han

Archives of Metallurgy and Materials

2024

Vol. 69, iss. 1

157--162

In this study, crystal grain refinement of pure titanium manufactured by electron beam melting through cryogenic rolling was performed. The effect of rolling in a cryogenic atmosphere on average grain size was investigated. Cryogenic atmosphere rolling was confirmed to be smaller than normal temperature rolling. Electron back scatter diffraction (EBSD) confirmed the presence of oriented crystal grains in the material. The deformation, temperature, and stress generated during rolling were calculated using 3D simulation. Finite element analysis (FEM) modeling was used to analyze the trend of average grain size change during the heat treatment of the rolled samples.